The present invention relates to an infrared irradiation device and, more specifically, to an infrared irradiation device capable of alleviating menstrual pain, by approaching the abdomen of the female, irradiating ovaries and smooth muscle in the uterus with infrared rays, and making smooth blood circulation around uterine smooth muscle. The device comprises: a circuit substrate formed with a flexible substrate a heat sink for absorbing heat infrared light-emitting diodes mounted on the heat sink a control module for controlling the amount of power and power pads for delivering the power to the infrared light-emitting diodes.COPYRIGHT KIPO 2016본 발명은 적외선 조사 장치에 관한 것으로, 보다 상세하게는 여성의 복부에 밀착하여 자궁의 평활근 및 난소에 적외선을 조사함으로써, 자궁 평활근 및 주위의 혈액순환을 원활히 하여 생리시의 통증을 완화시킬 수 있는 적외선 조사 장치에 관한 것이다.